I have discovered there are at least three types of colon (i.e., the punctuation) although I am unable to identify the third font as follows:
1. Normal Font ==> :
2. Chinese Font ==> ：
3. Unknown Font ==> ︰

Could someone please help identify the third "Unknown" font? Thank you very much! :-)

BTW, the Chinese Font is called "宋体" and the third colon (︰ ) is NOT part of the Chinese Font.

Try Arial